Pounder washer



Jan. 10, 1933. SCHMIDT 1,894,125

POUNDER WASHER Filed Jan. 15, 1951 Jnven+or: Friedrich Shmio Patented Jan. 10, 1933 FRIEDRICH SCHMIDT, OF BERLIN-LICPZTENRAQDE, GERMANY, ASSIGNOR OF ONE-HALF T EMIL MAX KAPELER, OF BERLlN-WILMEReDGRE, GERMANY roonnnn wesraan Application filed January 15, 1831, Serial No. 503,017, and in Germany May 9, 1930.

In order to subject the washing to be treated and present in the bath to the most intensive cleansing effect by means of a pounder washer, it is already known to supply compressed air to the pounder washer through its hollow handle. Moreover, in order to prevent a complicated feeding of the compressed air, it is also known to fit a plant on the pounder directly or also on its handle, which plant effects a compression of the external air freshly supplied thereto, dependent upon the iounding movements. These known arran gements, which also include those employing a bellows for producing the compressed air, are open to the objection that, apart from their comparatively great complication, they have functional disadvantages as regards the air supply or compression.

The beating washer according to the in vention, which has on its lower end an annular bead with outlet apertures and communicating with the upper part of tl e pounder, overcomes this objection in that by particularly favorable arrangement of a bellows on the upper end of the hollow handle, a double compression both of the air inclosed in the pounder by the water during the first worle ing stroke as also of the fresh air subsequently entering into the bellows is obtained. The valve arrangement of the bellows is directly coupled to one or both handles in such a manner that on the bellows or the washer being pressed downwards the valve is positively closed and positively opened during the lift ing of the washer.

In order to increase the eiiect of the air forced into the washing, it is heated in apparatus before it leaves same. this purpose an electric heating element is ar ranged in the compartment between the beat ing pounder and the bellows, which element is brushed over by the air flowing towards the discharge apertures in the annular head of the bell.

An embodiment of the invention is illustrated by way of example in the accompanying drawing in which Fig. 1 shows the pounder tral longitudinal section.

Fig. 2 shows the washer in top plan view.

asher in con- Figs. 3, l and 5 show the manner of operation of the washer.

F 6 shows the air bellows in longitudinal section on a larger scale.

Fig. 7 is a longitudinal section of the pounder on a larger scale.

Fig. 8 is a part longitudinal section of the hollow handle showing the heating element arranged therein.

The pounder 1 of the beating washer has at its lower edge an annular head 2, which is provided in known manner with discharge apertures 3 for the air and is connected to the upper part 5 of the pounder by means of a pipe 4. The part 5 is closed at its lower end by a valve 6. A hollow handle is connected to toe part 5 and provided at its upper end with an annular flange 8, which serves as bottom plate for the bellows consisting of the flexible portion 9 and the upp r plate 10. Handles ll, 11 are fixed on the upper plate 10, the handle 11 being arranged oscillatable to a limited extent on a pin 12 and provided on its lower surface with a soft plate 13 of packing material, which covers an aperture 14 in the plate 10. @n the under side of the plate a pipe 15 is fixed which has longitudinal slots 16 allowing the air to pass into the handle 7. The pipe 15 serves for centrally guiding the bellows 8, 9 and 10, whereas bands 18 fix the bellows in grooves in the plates 8 and 10. An electric heating element 19 is arranged at a suitable point in the hollow handle 7, the handle having an enlarged portion 20 at this point and being divided. The parts are then connected by screwing or the like.

The operation of the new pounder washer is as follows:

The pounder is grioped at the two handles 11, 11 shown in Fig. 3 and pressed downwards into the bath. The air in the pounder is forced upwaros according to the downward movement, lifts the valve 6 and passes into the hollow handle 7 Consequently the pressure of the air in the handle 7 the pipe 15 and the bellows 8, 9, 10 is increased by the addition of the air originally in the pounder; consequently a preliminary compression is obtained before the bellows are preferably compressed. When the lower edge of the pounder bears on the washing lying on the bottom of the bath, it encounters resistance and consequently the bellows 8, 9, 10 are compressed. During the commencement of the compression the valve 6 closes and owing to the cross section at the bottom between the hollow handle 7 and the pipe 4 the downwardly forced air is further compressed according to the difference in the cross section, which compression remains constant owing to the downward movement of the plate 10 up to the termination of the downward movement. Consequently, according to the invention, the air passing into the annular bead 2 through the pipe l is subjected to a considerable increase in pressure and passes out into the bath and washing in strong jets through the apertures 3.

During the downward movement of the beating washer the plate 10, according to Fig. 5, rises owing to the upward pull exerted on the handles 11, 11 and also the pressure of the spring 17 arranged between the plates 8 and 10. The handle 11, which is oscilatable to a limited extent on a pin 12, rises slightly from the plate 10 and exposes the aperture 14 by means of its packing plate 13, so that fresh air flows in according to the volumetric enlargement of the bellows and thereby closes the valve 6. When the washer has been completely lifted out of the water, the above described operation commences afresh.

I claim:

1. A pounder washer, comprising in combination a pounder, an air bellows, an intermediate chamber between said pounder and said bellows having open communication with said bellows and an aperture communicating with the interior of said pounder, a check valve at the lower end of said chamber adapted to control the aperture in said chamber, the lower edge of said pounder being provided with an air passage way having the discharge apertures, and an air feed pipe extending from said chamber to said lower edge adapted to supply air from said chamber to said lower edge.

2. A pounder washer as specified in claim 1, comprising in combination with the bellows, an air admission valve for said bellows, and a handle movably mounted on said bellows adjacent the valve to close said valve on being depressed and to open said valve on being raised.

In testimony whereof I aiiix my signature.

FRIEDRICH SCHMIDT. 

